Merge pull request #341 from isuftin/master

Fix for zoom to extent of session and not layer
Merge pull request #342 from isuftin/master

Switched trace level logging to info, switched JS .contains() to .has()
added argument for minimum pixel width for rasterized shoreline change envelope
Merge pull request #343 from tkunicki-usgs/master

added argument for minimum pixel width for rasterized shoreline change envelope
Merge branch 'master' of https://github.com/isuftin/coastal-hazards
Continuing work on the layer sweeper